National Crane Published 12-21-2011 CTRL #050-09 3-9
1300A OPERATORS MANUAL CONTROLS AND OPERATING PROCEDURES
HOIST SYSTEM OPERATION
The hoist may have lifting capabilities greater than that of the
crane limits. Therefore, care must be taken to ensure that the
load lifted is within the crane rating. General rules for hoist
operation are:
• Unwind the hoist when extending the boom.
• Use the anti-two-block system only as an aid.
• Make sure the rope is not twisted or kinked and that it is
properly seated in the hoist and in sheaves.
• Always have at least three full wraps of cable on the
hoist.
• Check the hoist brake when approaching the load limit of
the hoist. Raise the load a few inches and return the
control to neutral to check the brake.
• Do not drag the load with the hoist.
• Do not try to lift loads that are not free such as, frozen
down material or poles.
• Keep tension on the rope to prevent it from becoming
twisted, kinked, or improperly seated on the hoist.
Hoist Burst of Speed Operation
The Burst of Speed (BOS) increases hoist line speed over
normal operation The BOS is activated by a switch located
on the hoist control lever.
.
To start the BOS, depress the BOS switch and operate the
hoist lever on the armrest.
NOTE: Maximum Capacity with “BOS”
• One Part Line - 3000 lbs. (1361 kg)
• Two Part Line - 6000 lbs. (2722 kg)
• Three Part Line - 9000 lbs. (4082 kg)
• Maximum line speed on third layer - 240 FPM
(73 mpm), fourth layer - 265 FPM (81 mpm)
WORK SITE LOCATION
Select a location that is firm, level, and dry. Avoid uneven,
rocky or muddy terrain, steep grade or locations with
overhead obstructions. The outrigger stabilizers must be
supported on a firm level surface at the fully retracted,
mid-span, or fully extended positions. Avoid overhead power
lines.
Before Leaving the Truck Cab
• Position the truck so that the outriggers can be extended
with no obstructions.
• Position the truck transmission to neutral.
• Set the truck park brake. Wheel chocks may also be
required.
• Engage the power takeoff.
• Turn the truck cab switch to OFF.
Before Making the Lift
• Set the outriggers as described in the Crane Set-up
section in this manual.
• Program the LMI as specified in the LMI Operator’s
Manual which is located in the crane cab.
• Check all controls for proper operation. If any abnormal
operations are detected, the condition must be corrected
before continuing.
• Check the work area for electric power lines.
LOAD CHART
Your unit is designed to provide satisfactory service if it is not
loaded in excess of the maximum rated loads specified in the
load chart. Overloading can create safety hazards, cause
structural damage, and shorten the service life of the crane.
You must understand how to use the load charts located in
the crane cab. Make sure the load, the working area, and the
crane configuration are within the load limit specified in the
load chart.
NOTE: Load handling devices (hook blocks and slings) are
considered part of the load.
Using the Load Chart
The following list is a definition of terms needed when using
the load chart.
• Load Radius - The horizontal distance from the
centerline of rotation, before loading, to the center of the
vertical load line or block. This distance is slightly
greater with an unloaded boom due to deflection.
• Loaded Boom Angle - The loaded boom angle is the
angle between the first section boom and the horizontal
with the load. The loaded boom angle combined with the
boom length approximates the operating radius.
CAUTION
If the BOS feature is run continuously or with an overload,
damage to the crane or truck could occur.
DANGER
Truck must be in neutral when starting engine from crane
cab to avoid sudden potential movement of truck.
Reference Only
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